I’m using homebrew to manage many of the addons I use on my Mac. I had openjdk 12.0 installed previously but needed OpenJDK 1.8 to run Mulesoft AnyPoint Studio 7.4. Making that work I had to install OpenJDK 1.8 from adoptopenjdk (https://adoptopenjdk.net/) using homebrew and then tweak the ini-file controlling the AnyPoint Studio which is Eclipse based.
I started by downloading and installing Mulesoft AnyPoint Studio from Mulesoft. Then I installed openjdk 1.8 using homebrew.
brew tap AdoptOpenJDK/openjdk brew cask install adoptopenjdk8
OpenJDK 1.8 was installed to /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk and the Java Runtime Environment could be found in /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre. Making sure it works is always a good idea.
/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/bin/java -version
Now edit the AnypointStudio.ini for and specify the Java Runtime to use using the -vm switch (in bold).
-startup ../Eclipse/plugins/org.eclipse.equinox.launcher_1.4.0.v20161219-1356.jar --launcher.library ../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.551.v20171108-1834 -vm /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre -vmargs --add-modules=ALL-SYSTEM -Xms512m -Xmx1024m -XX:MaxPermSize=512m -Dosgi.instance.area.default=@user.home/AnypointStudio/studio-workspace -Dhttps.protocols=TLSv1.2,TLSv1.1,TLSv1 -Dsun.zip.disableMemoryMapping=true -Dequinox.resolver.revision.batch.size=1 -Dmule.testingMode=true -Dorg.mule.tooling.runtime.args=-XX:-UseBiasedLocking,-Dfile.encoding=UTF-8 -Dorg.mule.tooling.runtime.proxyVmArgs=-Dcom.ning.http.client.AsyncHttpClientConfig.useProxyProperties=true -Djdk.http.auth.tunneling.disabledSchemes= -XX:ErrorFile=./studio_crash_report.log -Dorg.mule.tooling.client.usecache=true -Dtooling.concurrent.local.repository.enabled=false -Dtooling.client.configuration.filter.parameters.reserved.names=false -Dfile.encoding=UTF-8 -Djava.awt.headless=true -XstartOnFirstThread -Dorg.eclipse.swt.internal.carbon.smallFonts
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